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-rw-r--r--sound/soc/fsl/fsl_sai.c10
-rw-r--r--sound/soc/fsl/fsl_sai.h1
2 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index b62c454e01cf..7a8e0d29ecb0 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -605,6 +605,11 @@ static int fsl_sai_startup(struct snd_pcm_substream *substream,
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int ret;
+ if (sai->is_stream_opened[tx])
+ return -EBUSY;
+ else
+ sai->is_stream_opened[tx] = true;
+
regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE,
FSL_SAI_CR3_TRCE);
@@ -621,6 +626,11 @@ static void fsl_sai_shutdown(struct snd_pcm_substream *substream,
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
+
+ if (sai->is_stream_opened[tx]) {
+ regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
+ sai->is_stream_opened[tx] = false;
+ }
}
static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {
diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h
index 24cb156bf995..80ccbaac038f 100644
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -137,6 +137,7 @@ struct fsl_sai {
bool is_dsp_mode;
bool sai_on_imx;
bool synchronous[2];
+ bool is_stream_opened[2];
unsigned int mclk_id[2];
unsigned int mclk_streams;